Carl Has Only Limited Background in Automobile Repair, However, He

Multiple Choice

Carl has only limited background in automobile repair, however, he often fixes his own vehicles as well as those of his friends. Typically, Carl can narrow a problem down to three to five likely causes. At that point, he tends to replace those various parts until he finally gets the vehicle running correctly. Carl is using which problem solving strategy?

A) elimination by aspects
B) the additive strategy
C) heuristics
D) trial and error